iOS 9 has arrived—but not for everyone. If Twitter is any indication, quite a few folks are struggling to download it, getting "Software Update Failed" errors left and right.

Chances are, this is a CDN error, caused by too many people trying to download software at once. Unfortunately, short of calling Tim Cook up to yell at him—I don't know about you guys, but that's a level of access I don't quite have yet—there's not a lot you can do here.

Option 1: Wait a few hours

I know new software is shiny and exciting, but it won't hurt too much to wait a few hours for the onslaught of downloads to slow. In the meantime, there's plenty of other stuff to do: Back up your iPhone or iPad, chat on Twitter or in our forums, or read our iOS 9 review.

Option 2: Try the update via iTunes

If you must have your software update right this minute, try downloading via iTunes on your Mac. We've had a lot of success downloading on the Mac instead of weighing down Apple's OTA servers.

Still having problems?

Let us know and we'll try to troubleshoot as best we can.